CN216851455U - Single-bearing water-cooling hub motor - Google Patents
Single-bearing water-cooling hub motor Download PDFInfo
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- CN216851455U CN216851455U CN202220124446.5U CN202220124446U CN216851455U CN 216851455 U CN216851455 U CN 216851455U CN 202220124446 U CN202220124446 U CN 202220124446U CN 216851455 U CN216851455 U CN 216851455U
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Abstract
The utility model discloses a single bearing water-cooling in-wheel motor, including rotor, stator, three-phase power lead-out wire, rotor sealing ring, rotor supporting ring, bearing, motor shaft, oil blanket, encoder, business turn over water nozzle, inside the rotor was located to the stator, rotor sealing ring and rotor supporting ring respectively with rotor both ends fixed connection, the bearing is located between the bearing mounting hole of outer disc of motor shaft and stator, plays the slewing bearing effect, motor shaft right-hand member and rotor supporting ring fixed connection, motor shaft left end is located to the encoder cover, in the rotor sealing ring inner sink was located to the oil blanket, the stator was established to the water-cooling internal stator, be equipped with the cooling water course in the stator, one side was equipped with two business turn over water nozzles on the left end face. The utility model adopts a single bearing to save space and reduce cost; the water cooling is adopted, so that the heat dissipation of the motor is effectively improved; the framework oil seal is adopted for sealing, and enough space is reserved on the rotor sealing ring beside the oil seal so as to carry out secondary end face sealing, so that the sealing reliability is improved.
Description
Technical Field
The utility model relates to the technical field of electric machine, especially, relate to a new energy automobile drives with single bearing water-cooling wheel hub motor.
Background
With the development of a new energy automobile driving technical route, the hub motor driving becomes an important branch, and even is considered as one of the best driving modes of the new energy automobile by some people in the industry.
In the existing hub motor technology, the defects of difficult heat dissipation and low sealing reliability exist. The problem of among the prior art can promote the using widely of wheel hub motor is solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that there is the heat dissipation difficulty in current in-wheel motor among the above-mentioned background art, sealing reliability is low, the utility model provides a single bearing water-cooling in-wheel motor.
In order to achieve the above object, the utility model provides a following technical scheme:
a single-bearing water-cooling hub motor comprises a rotor, a stator and a three-phase power outgoing line, wherein the stator is arranged inside the rotor, the three-phase power outgoing line is a power outgoing line of a stator coil winding, and the single-bearing water-cooling hub motor is characterized by further comprising a rotor sealing ring, a rotor supporting ring, a bearing, a motor shaft, an oil seal, an encoder and a water inlet and outlet nozzle, wherein the rotor is arranged as a motor shell, the rotor sealing ring and the rotor supporting ring are respectively and fixedly connected with two ends of the rotor, a through hole is formed in the center inside of the stator, a bearing mounting hole is formed in the right end of the through hole, a counter bore is formed in the left end of the through hole, the motor shaft is inserted into the stator, the bearing is arranged in the bearing mounting hole, the inner ring of the bearing is fastened with the outer circular surface of the motor shaft, the outer ring is fastened with the bearing mounting hole to play a role of rotary support, the right end of the motor shaft is fixedly connected with the rotor supporting ring, and the encoder is sleeved at the left end of the motor shaft, the stator is characterized in that the outer side face is arranged in a counter bore and used for controlling the rotating speed and the torque of a motor, a stator sealing ring is sleeved at the left end of the stator, an oil seal is arranged between the outer circular face of the stator sealing ring and the counter bore in the rotor sealing ring, the stator is arranged as a water-cooling inner stator, a cooling water channel is arranged in the stator, two water inlet and outlet nozzles are arranged on one side of the left end face, the interiors of the two water inlet and outlet nozzles are respectively communicated with two ends of the cooling water channel, the exteriors of the two water inlet and outlet nozzles are respectively communicated with a cooling system through cooling water pipes, a junction box is further arranged on the left end face of the stator, and three-phase power outgoing lines are led out through the junction box.
Further, the stator comprises a coil winding and a stator support, and the coil winding is sleeved on the outer circular surface of the stator support; the through hole is arranged in the center of the interior of the stator support, a bearing mounting hole is formed in the right end of the through hole, a counter bore is formed in the left end of the through hole, the right end of the stator sealing ring is fixedly connected with the left end of the stator support, and the cooling water channel is arranged in the stator support and can be arranged in an annular shape and an axial S shape or in a spiral shape.
Furthermore, the cooling water channel is annular and axially S-shaped, is arranged in the inner circular surface of the stator support in an enclosing manner and comprises 2N middle arc-shaped waist grooves which are uniformly distributed in the circumferential direction, N lower arc-shaped waist grooves which are uniformly distributed in the circumferential direction and N-1 upper arc-shaped waist grooves which are uniformly distributed in the circumferential direction, the lower arc-shaped waist grooves, the middle arc-shaped waist grooves and the upper arc-shaped waist grooves are coaxial, and the lower arc-shaped waist grooves and the upper arc-shaped waist grooves are respectively arranged at the lower end and the upper end of the middle arc-shaped waist grooves;
two adjacent middle arc-shaped waist grooves in the 2N middle arc-shaped waist grooves are respectively communicated with the two water inlet and outlet nozzles, the N lower arc-shaped waist grooves are respectively aligned and communicated with every two adjacent middle arc-shaped waist grooves in the direction away from the other water inlet and outlet nozzle from the middle arc-shaped waist groove communicated with the water inlet and outlet nozzle, and the N-1 upper arc-shaped waist grooves and the N lower arc-shaped waist grooves are arranged in a staggered manner and are respectively aligned and communicated with every two staggered adjacent middle arc-shaped waist grooves;
and N is a natural number greater than 1.
Further, the bearing is a single bearing, and the type of the bearing can adopt a deep groove ball bearing or a cylindrical roller bearing or a tapered roller bearing; and a bearing sleeve is embedded in the bearing mounting hole, and the bearing outer ring is fastened with the inner hole of the bearing sleeve.
Further, the oil seal adopts a framework oil seal.
Furthermore, enough space is reserved on the outer side of the oil seal on the outer end face of the rotor sealing ring, and the rotor sealing ring can be used for arranging a sealing groove and a sealing ring or a sealing plate and is used for carrying out secondary end face sealing.
Further, the encoder adopts a rotary transformer or an absolute value encoder.
Further, the counter bore is established to four layers of stairstepping counter bores, the encoder is located in two layers of stairways, and the left side is equipped with the protective cover, and this protective cover is located on the fourth layer of stairways.
Furthermore, a first outer spigot is arranged on the inner end surface of the rotor sealing ring, and the rotor sealing ring is connected with the inner hole of the rotor in a positioning manner through the first outer spigot; and a second outer spigot is arranged on the inner end surface of the rotor support ring, and the rotor support ring is connected with the inner hole of the rotor in a positioning way through the second outer spigot.
Compared with the prior art, the beneficial effects of the utility model are that: 1) the utility model has the advantages of ingenious structural layout and good manufacturability; 2) the rotary support adopts a single bearing, so that the space is saved, and the cost is reduced; 3) the water cooling is adopted, so that the heat dissipation of the motor is effectively improved; 4) the stator and the rotor are sealed by using a framework oil seal, and enough space is reserved on a rotor sealing ring beside the oil seal so as to carry out secondary end face sealing, so that the sealing reliability is improved.
Drawings
Fig. 1 is a schematic view of an external structure of an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of an embodiment of the present invention;
fig. 3 is a left side view of the embodiment of the present invention;
fig. 4 is a schematic structural view of a stator bracket according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 5;
fig. 6 is a schematic structural view of a cooling water channel according to an embodiment of the present invention;
FIG. 7 is a schematic cross-sectional view of a second embodiment of the present invention;
fig. 8 is a left side view of the second embodiment of the present invention.
In the figure: 1. the rotor sealing ring comprises a rotor sealing ring, 101, a first outer spigot, 102, an annular sealing groove, 2, a rotor, 3, a stator, 301, a coil winding, 302, a stator support, 3021, a four-layer stepped counter bore, 3022, a cooling water channel, 30221, a middle arc-shaped waist groove, 30222, an upper arc-shaped waist groove, 30223, a lower arc-shaped waist groove, 4, a rotor supporting ring, 401, a second outer spigot, 5, a motor shaft, 6, a bearing, 7, a bearing sleeve, 8, an oil seal, 9, an encoder, 10, a water inlet and outlet nozzle, 11, a three-phase power leading-out wire, 12, a protective cover, 13, a stator sealing ring, 14, a sealing plate, 1401, an annular boss, 15 and a screw.
Detailed Description
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "vertical", "horizontal", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1 to 6, the embodiment of the present invention includes rotor 2, stator 3, three-phase power outgoing line 11, rotor sealing ring 2, rotor supporting ring 4, bearing 6, motor shaft 5, oil seal 8, encoder 9 and business turn over water cock 10, and inside rotor 2 was located to stator 3, three-phase power outgoing line 11 was stator coil winding 301's power outgoing line, and rotor 2 established to motor housing (paste on the inner wall and have the permanent magnet), rotor sealing ring 1 and rotor supporting ring 4 respectively with rotor 2 both ends fixed connection.
As shown in fig. 4, 5, and 6, the cooling water channel 3022 is annular and axially S-shaped, and is disposed around the inner circumferential surface of the stator support 302, and includes 12 middle arc-shaped waist slots 30221 uniformly distributed in the circumferential direction, 6 lower arc-shaped waist slots 30223 uniformly distributed in the circumferential direction, and 5 upper arc-shaped waist slots 30222 uniformly distributed in the circumferential direction, where the lower arc-shaped waist slot 30223, the middle arc-shaped waist slot 30221, and the upper arc-shaped waist slot 30222 are coaxial, and the lower arc-shaped waist slot 30223 and the upper arc-shaped waist slot 30222 are respectively disposed at the lower end and the upper end of the middle arc-shaped waist slot 30221;
two adjacent middle arc-shaped waist grooves 30221 in the 12 middle arc-shaped waist grooves 30221 are respectively communicated with the two water inlet and outlet nozzles 10, 6 lower arc-shaped waist grooves 30223 are respectively aligned and communicated with the two adjacent middle arc-shaped waist grooves 30221 in the direction away from the other water inlet and outlet nozzle 10 from the middle arc-shaped waist groove 30221 communicated with the water inlet and outlet nozzle 10, and 5 upper arc-shaped waist grooves 30222 are staggered with the 6 lower arc-shaped waist grooves 30223 and are respectively aligned and communicated with the staggered two adjacent middle arc-shaped waist grooves 30221.
The motor shaft 5 is inserted in the stator bracket 302, and the right end of the motor shaft 5 is fixedly connected with the rotor support ring 4.
A bearing 6 is arranged in a bearing mounting hole 3023 of the stator support 302, the inner ring of the bearing 6 is fastened with the outer circular surface of the motor shaft 5, and the outer ring is fastened with the bearing mounting hole 3023 at the left end of the stator support 302 to play a role of a slewing bearing and drive the rotor 2 to rotate; the bearing 6 is a single bearing, so that the installation space of the motor is saved, and the cost of the motor is reduced; the type of the bearing 6 may employ a deep groove ball bearing or a cylindrical roller bearing or a tapered roller bearing.
The encoder 9 is sleeved at the left end of the motor shaft 5, and the outer side surface of the encoder is arranged in a two-layer stepped hole of the four-layer stepped counter bore 3021 and used for controlling the rotating speed and the torque of the motor;
Preferably, the bearing sleeve 7 is embedded in the bearing mounting hole 3023, and the outer ring of the bearing 5 is fastened to the inner hole of the bearing sleeve 7.
Preferably, the encoder 9 is a rotary transformer, and a protecting cover 12 is disposed on the left side of the encoder 9, and the protecting cover 12 is disposed on the fourth step hole of the four-step-shaped counterbore 3021.
Preferably, a first outer spigot 101 is arranged on the inner end surface of the rotor sealing ring 1, and the rotor sealing ring 1 is connected with an inner hole of the rotor 2 in a positioning manner through the first outer spigot 101; the inner end face of the rotor support ring 4 is provided with a second outer spigot 401, and the rotor support ring 4 is connected with the inner hole of the rotor in a positioning way through the second outer spigot 401. The assembly manufacturability and the assembly efficiency of the motor are improved.
As shown in fig. 7 and 8, the second embodiment of the present invention is substantially the same as the first embodiment, except that: two annular sealing grooves 102 are formed in the outer end face of the rotor sealing ring 1 and located on the outer side of the oil seal 8, a sealing plate 14 is arranged at the left end of the rotor sealing ring 1, the sealing plate 14 is fixedly connected with the rotor sealing ring 1 through screws 15, two annular bosses 1401 extending outwards are arranged at the right end of the sealing plate 14, the two annular bosses 1401 are respectively inserted into the two annular sealing grooves 102 to form a sealing labyrinth, secondary end face sealing can be performed on the motor, and therefore the sealing reliability of the motor is improved.
Preferably, the encoder is an absolute value encoder.
Preferably, the outer side surfaces of the two annular bosses 1401 at the right end of the sealing plate 14 are wrapped with felt and then inserted into the two annular sealing grooves 102, so that the sealing performance of the motor can be further improved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A single-bearing water-cooling hub motor comprises a rotor, a stator and a three-phase power outgoing line, wherein the stator is arranged inside the rotor, the three-phase power outgoing line is a power outgoing line of a stator coil winding, and the single-bearing water-cooling hub motor is characterized by further comprising a rotor sealing ring, a rotor supporting ring, a bearing, a motor shaft, an oil seal, an encoder and a water inlet and outlet nozzle, wherein the rotor is arranged as a motor shell, the rotor sealing ring and the rotor supporting ring are respectively and fixedly connected with two ends of the rotor, a through hole is formed in the center inside of the stator, a bearing mounting hole is formed in the right end of the through hole, a counter bore is formed in the left end of the through hole, the motor shaft is inserted into the stator, the bearing is arranged in the bearing mounting hole, the inner ring of the bearing is fastened with the outer circular surface of the motor shaft, the outer ring is fastened with the bearing mounting hole to play a role of rotary support, the right end of the motor shaft is fixedly connected with the rotor supporting ring, and the encoder is sleeved at the left end of the motor shaft, the stator is characterized in that the outer side surface is arranged in a counter bore and used for controlling the rotating speed and the torque of a motor, a stator sealing ring is sleeved at the left end of the stator, an oil seal is arranged between the outer circular surface of the stator sealing ring and the counter bore in the rotor sealing ring, the stator is arranged into a water-cooling inner stator, a cooling water channel is arranged in the stator, two water inlet and outlet nozzles are arranged on one side of the left end surface, the interiors of the two water inlet and outlet nozzles are respectively communicated with two ends of the cooling water channel, the outer portions of the two water inlet and outlet nozzles are respectively communicated with a cooling system through cooling water pipes, a junction box is further arranged on the left end surface of the stator, and the three-phase power outgoing line is led out through the junction box.
2. The single-bearing water-cooled hub motor as claimed in claim 1, wherein: the stator comprises a coil winding and a stator support, and the coil winding is sleeved on the outer circular surface of the stator support; the through hole is arranged in the center of the interior of the stator support, a bearing mounting hole is formed in the right end of the through hole, a counter bore is formed in the left end of the through hole, the right end of the stator sealing ring is fixedly connected with the left end of the stator support, and the cooling water channel is arranged in the stator support and can be arranged in an annular shape and an axial S shape or in a spiral shape.
3. The single-bearing water-cooled hub motor as claimed in claim 2, wherein: the cooling water channel is annular and axially S-shaped, is arranged in the inner circular surface of the stator support in a surrounding manner, and comprises 2N middle arc-shaped waist grooves which are uniformly distributed in the circumferential direction, N lower arc-shaped waist grooves which are uniformly distributed in the circumferential direction and N-1 upper arc-shaped waist grooves which are uniformly distributed in the circumferential direction, wherein the lower arc-shaped waist grooves, the middle arc-shaped waist grooves and the upper arc-shaped waist grooves are coaxial, and the lower arc-shaped waist grooves and the upper arc-shaped waist grooves are respectively arranged at the lower end and the upper end of the middle arc-shaped waist grooves;
two adjacent middle arc-shaped waist grooves in the 2N middle arc-shaped waist grooves are respectively communicated with the two water inlet and outlet nozzles, the N lower arc-shaped waist grooves are respectively aligned and communicated with every two adjacent middle arc-shaped waist grooves in the direction away from the other water inlet and outlet nozzle from the middle arc-shaped waist groove communicated with the water inlet and outlet nozzle, and the N-1 upper arc-shaped waist grooves and the N lower arc-shaped waist grooves are arranged in a staggered manner and are respectively aligned and communicated with every two staggered adjacent middle arc-shaped waist grooves;
and N is a natural number greater than 1.
4. The single-bearing water-cooled hub motor as claimed in claim 1, wherein: the bearing is a single bearing, and the type of the bearing can adopt a deep groove ball bearing or a cylindrical roller bearing or a tapered roller bearing; and a bearing sleeve is embedded in the bearing mounting hole, and the bearing outer ring is fastened with the inner hole of the bearing sleeve.
5. The single-bearing water-cooled hub motor as claimed in claim 1, wherein: the oil seal is a framework oil seal.
6. A single bearing water cooled in-wheel motor as claimed in any one of claims 1 to 5, wherein: and enough space is reserved on the outer side of the oil seal on the outer end face of the rotor sealing ring, and the rotor sealing ring can be used for arranging a sealing groove and a sealing ring or a sealing plate and is used for carrying out secondary end face sealing.
7. The single-bearing water-cooled hub motor according to claim 1, characterized in that: the encoder adopts a rotary transformer or an absolute value encoder.
8. The single-bearing water-cooled hub motor of claim 7, wherein: the counter bore is set to four layers of stepped counter bores, the encoder is arranged in the two layers of stepped bores, and the left side of the encoder is provided with a protective cover which is arranged on the fourth layer of stepped bores.
9. The single-bearing water-cooled hub motor as claimed in claim 1, wherein: the inner end face of the rotor sealing ring is provided with a first outer spigot, and the rotor sealing ring is connected with the inner hole of the rotor in a positioning way through the first outer spigot; and a second outer spigot is arranged on the inner end surface of the rotor support ring, and the rotor support ring is connected with the inner hole of the rotor in a positioning way through the second outer spigot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220124446.5U CN216851455U (en) | 2022-01-18 | 2022-01-18 | Single-bearing water-cooling hub motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220124446.5U CN216851455U (en) | 2022-01-18 | 2022-01-18 | Single-bearing water-cooling hub motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216851455U true CN216851455U (en) | 2022-06-28 |
Family
ID=82083769
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220124446.5U Active CN216851455U (en) | 2022-01-18 | 2022-01-18 | Single-bearing water-cooling hub motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216851455U (en) |
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2022
- 2022-01-18 CN CN202220124446.5U patent/CN216851455U/en active Active
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